User manual

µC
2
SE process chiller +030220416 - rel. 2.2 - 25.01.2013
4 COMMISSIONING
4.1 Firmware version
On controller switch-on the firmware version of the same can be verified, along
with that of the EVD
4
driver and I/O expansion board via the parameters H99, H97
and H95.
4.2 Configuration
The configuration parameters must be set during the commissioning of the
controller and concern:
- the type of chiller: air-water or water-water, number of compressors and
partialisation logic, enabling of compressor partialisation in high pressure
mode, enabling hot gas and pump down by-pass function;
- the configuration of the tLAN network: devices connected, type of protocol
and serial address;
- the setting of the device counter, the keyboard block, the modification of the
alarm relay state.
4.2.1 Machine parameters (par. H01, H04, H05,
H12, H25, H26)
The controller allows to manage two types of chiller: air-water and water-water.
Moreover, the number of compressors per circuit can be 1 or 2 with alternating
operation (tandem) or compressor 1 with partialisation valve, powered according
to the logic of parameter H12. Rotation is not managed in this case (see the
"Regulation" chap.). The hot gas by-pass in temperature mode function allows to
increase the temperature of the output water from the evaporator. See the
regulation chapter.
4.2.2 Network parameters (par. H08, H10, H23)
The tLAN network can be composed just by the controller for process chiller, which
will have the inputs/outputs for the standard machine controller. If the thermostatic
expansion valve is replaced by the electronic expansion valve, the EVD
4
driver must
be connected. If connected, the I/O expansion board allows to configure the digital
inputs with 5 new warnings or alarms. Moreover, it allows each individual digital
output to change on the basis of an individual alarm. The serial address identifies
the controller in a RS485 network with Carel or Modbus protocol.
4.2.3 tLAN address configuration
The tLAN factory addresses of the I/O expansion board and of the EVD
4
driver are
given in the table. The tLAN address of the I/O expansion board is fixed. To modify
the address of the EVD
4
driver, consult the manual cod +030220227.
4.2.4 Other configuration parameters (par. c14,
/23, H09, P35)
c14 establishes the number of operating hours of the compressors/pumps,
expressed in hundreds of hours, over which to activate the maintenance request
signal (Hc1, Hc2). c10 and c11 are read only parameters and indicate the number
of operating hours of the compressors 1 and 2, expressed in hundreds of hours.
c15 and c16 are read only parameters and they indicate the number of evaporator
and condenser pump operating hours, expressed in hundreds of hours. The
maintenance request signal for the pumps is always Hc1. Pressing and
simultaneously, in the timer value display phase, resets the same at zero and
consequently to the cancellation of the maintenance request. H09 allows to disable
the modification of the “Direct” and “User” parameters from keyboard; however it
allows to display the parameter values. The timer reset function is also disabled.
P35 allows to alter the status of the alarm relay, if it is active.
Par. Description
Def Min Max U.M.
H99 Software version - 0 99.9 -
H97 Driver software version - 0 999 -
H95 Expansion board I/O software version - 0 99.9 -
Par. Description
Def Min Max U.M.
H01 Chiller type
2=Air-water
4=Water-water
22 4 -
H04 Number of compressors per
circuit
0 =1 compressor on circuit 1
1= 2 compressors tandem on
circuit 1
2= Do not select
3= Do not select
4=1 compressor and a
partialisation on circuit 1
5= Do not select
00 5 -
H05 Evaporator pump
0=Absent
1=Always on
2=On at regulator request
3=On at regulator request and
timed
10 3 -
H12 Compressor partialisation valve
0 = Normally excited
1 = Normally unexcited
2, 3 = Do not select
10 3 -
H13 Pump down
0/1 = disabled/enabled
00 1 -
H25 Hot gas by-pass
0/1 = disabled/enabled
00 1 -
H26 Hot gas by-pass in stand-by
0/1= disabled/enabled
00 1 -
Par. Description
Def Min Max U.M.
H08 Network configuration
0 = Control only
1 = Control + EVD
2, 3 = Do not select
4 = Control + IO
5 = Control + EVD + IO
6, 7 = Do not select
0 0 7 -
H10 RS485 serial address 1 1 200 -
H23 Network protocol
0 = Carel
1 = ModBus
0 0 1 -
Device tLAN address
I/O expansion board 3
EVD
4
Drive
r
2
Par. Description
Def Min Max U.M.
c10 Compressor 1 time
r
0 0 800 100 h
c11 Compressor 2 time
r
0 0 800 100 h
c14 Maintenance request threshold
0 = function disabled
0 0 100 100 h
c15 Evaporator pump time
r
0 0 800 100 h
c16 Condenser pump time
r
0 0 800 100 h
/23 Unit of measuremen
t
0/1 = °C/°F
0 0 1 -
H09 Lock keypad
0/1 = disabled/enabled
1 0 1 -
P35 Modify alarm relay status via PRG/mute
0/1=No/Yes
0 0 1 -
15